Experiment: 8V9S

Distinct Quaternary States, Intermediates, and Autoinhibition During Loading of the DnaB-Replicative Helicase by the Phage Lambda P Helicase Loader

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		298.15	Crystals were prepared using the sitting drop vapor diffusion method by mixing either 0.1, or 0.2, or 0.4 uL of the protein solution and 0.2 uL of a series of commercially available crystallization screens (Qiagen). Optimized crystals for X-ray diffraction were grown at room temperature in a buffer consisting of 3 M to 4 M NaCl with 0.1 M HEPES-NaOH, pH 7 to 8 and required 7 days to form.

Crystal Properties
Matthews coefficient	Solvent content
1.92	35.97

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.731	α = 90
b = 49.731	β = 90
c = 70.772	γ = 120

Symmetry
Space Group	P 31 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	PIXEL	DECTRIS EIGER2 X 16M		2021-06-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 24-ID-C	0.97918	APS	24-ID-C

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	1.86	43.07	98.49	0.105	0.115	0.047	0.987	18.99	5.7		8852			20.16

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.86	1.98			0.721	0.364	0.678	0.8

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	SAD	FREE R-VALUE	1.86	43.07	0.15	8718	870	98.49	0.2276	0.2258	0.2264	0.2436	0.2434	27.94

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	5.1559
f_angle_d	1.256
f_chiral_restr	0.0529
f_plane_restr	0.0142
f_bond_d	0.0108

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	607
Nucleic Acid Atoms
Solvent Atoms	76
Heterogen Atoms

Software

Software
Software Name	Purpose
PHENIX	refinement
PHENIX	model building
HKL-2000	data reduction
HKL-2000	data scaling
PHENIX	phasing